The problem with starting a thread on news stories like this is that the story is often based on a scientific paper which is sitting behind a paywall. But after a bit of Googling I managed to find a blogger who has been prepared to pay the $20 to read the full paper and has put some effort into debunking it:
On the old adage "Eat breakfast like a king, lunch like a prince, and dinner like a pauper", it doesn't look as though the adage is that old from checking the source of the quote. The source is Adelle Davis, a famous US author of several books on nutrition and health, and a leader of the "food faddism" movement, and probably dates back to the 1950s or 60s.
Davis died in the 1970s from cancer, which was ironic because she asserted that she didn't know of anybody who drank a quart of milk every day dying of cancer, and it is a reasonable assumption that she must have been following her own advice.